Often moving or changing a wall triggers a "line is too short" error. This is from sketched elements (typically finish floors and ceilings that have been attached to the walls. The only option is to delete elements, or to cancel the move, track down the element(s) cut and paste in place the sketch lines to associate them, finish editing the sketch, then return to the wall, move it, and make other needed adjustments and then go back to the floor/ceiling and edit it to work with the new layout.
I'd like an option to "unassociate sketch lines" to save time and prevent accidental deletion of objects.